#include <iostream>
using namespace std;
int main()
{
const int USER=201701,PSW=135790;
int user,psw;
cout <<"用户名：";
cin>>user;
cout <<"密码 :";
cin>>psw;
if(user==USER)
if(psw==PSW)
cout <<"亲爱的小朋友，欢迎你!";
else
cout <<"密码错误！";
else
cout <<"用户名错误！";
return 0;
}
 
 
